Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2007-05-01
2007-05-01
Benson, Walter (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S544000, C324S701000
Reexamination Certificate
active
11202274
ABSTRACT:
A method and a device for detecting a touching point (i.e. contact point) on a machine having a rotating shaft, in which the touching point (i.e. contact point) on the shaft is determined during operation. This is performed by measuring the grounding state of the shaft by measuring a characteristic (such as a current) of electricity flowing to ground via one or more ground connections provided on the shaft.
REFERENCES:
patent: 3831160 (1974-08-01), Cronin et al.
patent: 4831295 (1989-05-01), Posedel
patent: 6460013 (2002-10-01), Nippes
patent: 6798112 (2004-09-01), Daley
patent: 2 498 060 (2004-03-01), None
patent: 2 498 060 (2004-03-01), None
patent: 2 498 105 (2004-03-01), None
patent: 2 498 105 (2004-03-01), None
patent: 1 217 493 (1966-05-01), None
patent: 0 271 678 (1988-06-01), None
patent: 0 503 846 (1992-09-01), None
patent: WO 2004/025316 (2004-03-01), None
patent: WO 2004/025811 (2004-03-01), None
Ong et al., “Shaft Currrent in AC Induction Machine—An Online Monitoring System and Prediction Rules”, IEEE Transaction on Industry Applications, vol. 37, No. 4, Jul./Aug. 2001.
European Search Report for EP 05 10 7160 (8 pages) and brief translation thereof (1 page).
Alstom Technology Ltd.
Benson Walter
Darby & Darby
LandOfFree
Method and device for detecting a contact point on a shaft... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for detecting a contact point on a shaft..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for detecting a contact point on a shaft... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3725601